New Zealand Quake
For 16,000 years there were no external signs of a fault near Christ Church, New Zealand. When the Otira glaciers retreated the resulting rivers brought mounds of rock and gravel that covered up everything. And then for at least 16,000 nothing happened. Until September 4, when a 7.1 magnitude earthquake rocked New Zealand’s second largest city. A 22km-long surface rupture and up to 4m of horizontal displacement is now visible between suburbs Darfield and Rolleston. GNS Science, Te Pü Ao produced the following video view of the fault.